In order to modulate the flow of supply air, VAV systems may use inlet guide vanes on the fan inlet or _____.
a. hot gas bypass
b. an economizer
c. variable speed drives
d. powered exhaust
c. variable speed drives
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Which of the following components makes detailed tuning of diesel engine intake manifolds unnecessary?
A. charge air cooler B. precleaner C. positive air cleaner D. turbocharger
Al instalar una extensión reticulada abatible, los soportes adicionales deben ______.
a. extenderse hasta la mitad b. extenderse y configurarse según las recomendaciones del fabricante c. permanecer sin extenderse d. extenderse completamente
The diameter of a cylinder is called the ________
A) Stroke B) Diameter C) Radius D) Bore
To transfer elevations up a structure, first establish a temporary benchmark at the base, then locate a second
temporary benchmark at the desired floor or level using a(n) _____. a. builder's level b. auto level c. laser level d. tape